.c_background {
  background-size: 100% 100%;
  width: 100%;
  height: 100%;
}

.c_background_top {
  background: url("../images/background/c_background_top.png");
  height: 71.6%;
  width: 100%;
  background-size: 100% 100%;
}

.c_background_middle {
  background: url("../images/background/c_background_middle.png");
  height: 13.3%;
  width: 100%;
  background-size: 100% 100%;
}

.c_background_bottom {
  background: url("../images/background/c_background_bottom.png");
  height: 15.1%;
  width: 100%;
  background-size: 100% 100%;
}

.girl {
  background: url("../images/girl.png") no-repeat -755px -0px;
  position: absolute;
  height: 280px;
  width: 140px;
  top: 37%;
  right: 28%;
}

.bridge_bottom {
  position: absolute;
  height: 24%;
  width: 100%;
  top: 76%;
}

.water {
  width: 100%;
  height: 100%;
}

.water_1,
.water_2,
.water_3,
.water_4 {
  width: 100%;
  position: absolute;
  height: 50%;
}

.water_1 {
  width: 91px;
  height: 15px;
  top: 13%;
  left: 40%;
  background: url("../images/water.png") -261px -0px no-repeat;
}

.water_2 {
  width: 111px;
  height: 9px;
  top: 30%;
  left: 45%;
  background: url("../images/water.png") -693px -0px no-repeat;
}

.water_3 {
  width: 191px;
  height: 29px;
  top: 50%;
  left: 30%;
  background: url("../images/water.png") -0px -0px no-repeat;
}

.water_4 {
  width: 211px;
  height: 12px;
  top: 75%;
  left: 30%;
  background: url("../images/water.png") -392px -0px no-repeat;
}

.stars {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0px;
}

.stars>li {
  position: absolute;
  width: 30px;
  height: 31px;
  background-image: url("../images/stars.png");
  animation: flash 5s ease-in-out infinite;
}

.stars1 {
  top: 20%;
  left: 30%;
}

.stars2 {
  top: 15%;
  left: 20%;
}

.stars3 {
  top: 25%;
  left: 85%;
}

.stars4 {
  top: 30%;
  left: 70%;
}

.stars5 {
  top: 25%;
  left: 20%;
}

.stars6 {
  top: 10%;
  left: 65%;
}

@keyframes flash {
  0%,
  50%,
  100% {
    opacity: 1;
  }
  25%,
  75% {
    opacity: 0;
  }
}

#snowflake {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: 33.33%;
  overflow: hidden;
}

.snowRoll {
  position: absolute;
  opacity: 0;
  height: 80px;
  animation: mysnow 20s;
}

@keyframes mysnow {
  0% {
    transform: rotate(1080deg);
  }
  100% {
    transform: rotate(0deg);
  }
}


/*文字效果*/

.logo {
  width: 185px;
  height: 81px;
  background-image: url('../images/logo.png');
  background-size: 100% 100%;
  z-index: 999999;
  position: absolute;
  left: 50%;
  margin-left: -92.5px;
  top: 30px;
  display: none;
}

.logolightSpeedIn {
  display: block;
  animation: lightSpeedIn 1s ease-out;
}

@keyframes lightSpeedIn {
  0% {
    transform: translate(100%, 0) skewX(-30deg);
    opacity: 0;
  }
  60% {
    transform: skewX(20deg);
    opacity: 1;
  }
  80% {
    transform: skewX(-5deg);
    opacity: 1;
  }
  100% {
    transform: none;
    opacity: 1;
  }
}

.logoshake {
  animation: logoshake .5s;
}

@keyframes logoshake {
  0%,
  100% {
    transform: translate(0, 0);
  }
  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translate(-5px, 0);
  }
  20%,
  40%,
  60%,
  80% {
    transform: translate(10px, 0);
  }
}

@keyframes girl-rotate {
  0% {
    background-position: -604px 0px;
  }
  16.7% {
    background-position: -151px 0px
  }
  33.4% {
    background-position: -906px 0px;
  }
  50.1% {
    background-position: 0px 0px;
  }
  66.8% {
    background-position: -302px 0px;
  }
  83.5% {
    background-position: -453px 0px;
  }
  100% {
    background-position: -604px 0px;
  }
}

.girl-rotate {
  animation: girl-rotate 850ms steps(1, start) 1 forwards;
}
